Axle-cutting device



7 (No Model.)

G. A. THOMPSON. AXLE CUTTING DEVICE.

No. 425.192. Patented Apia 8, 1890.

ICNVENW A TTORNE Y8 UNITED STATES PATENT OFFICE;

CHARLES A. THOMPSON, OF TRAVERSE CITY, MICHIGAN.

AXLE-CUTTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 425,192, dated April 8, 1890.

v Application filed December 21, 1889. Serial No. 334,569. (No model.)

To all whom, it may concern:

Be it known that I, CHARLES A. THOMPSON, of Traverse City, in the county of Grand Traverse and State of Michigan, have invented a new and Improved Thread and Shoulder Outter for Axles, of which the following is a full, clear, and exact description.

My invention relates to improvements in machines for cutting threads and shoulders upon vehicle-axles; and the object of my invention is to provide a simple and efficient device for cutting a thread upon axles or for cutting a shoulder on axles when they become worn, so as to obviate the use of washers, and to provide a device that will do the above work without removing the axle from the vehiclebody.

To this end my invention consists in certain features of construction and combinations of parts, that will be hereinafter fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical longitudinal section of the device as applied to a vehicle-axle on the line 1 1 of Fig. 2; Fig. 2, a horizontal longitudinal section of the same on the line 2 2 of Fig. 1; Fig. 3, a transverse section on the line 3 3 of Figs. 1 and 2; Fig. 4:, a transverse section on the line 4: 4 of Figs. 1 and 2; Fig. 5, a cross-section on the line 5 5 of Fig; 1, the di-' rection from which all said sections are taken being indicated by arrows in the drawings,

and Fig.6, a longitudinal section of a modified form of chuck, showing set-screws therein to bear upon the axle.

The frame A is made in a single piece, having an inwardly-extending end with a central opening therein which may be slipped upon an axle B, to which it is clamped by the setscrews a, which project through the top and bottom of the frame and impinge upon the clamping-pieces b, and by the set-screws a, which project through each side of the frame A nearer the end of the'axle B and impinge upon the clamping-pieces b,so that by tightening the set-screws a and a the frame A may be rigidly attached to the axle B.

The frame, A is constructed with a central open portion 0 and a flat outer face and thickened at the part d to form a bearing for the spindle D, which passes through the outer portion of the frame. The spindle D is adapted to turn in the enlargement of the frame A. Its outer end is flattened upon the sides and provided with a crank e, by which it is turned, and its inner end is provided with a chuck E, carrying cutters f for cutting the shoulder or thread on the axle.

The cutters are of the usual construction, and are inserted through holes in the sides of the chuck E and held in position by the setscrews g, which project through the chuck, so as to impinge on the cutters. The cutters are arranged in a spiral line in the chuck-that is, one is placed nearer the end of the chuck and the others in their-respective sides at regular intervals behind each other-so that as the chuck is turned upon an axle having a thread thereon the cutters, being the space of a thread behind each other, will follow and recut the thread, each cutter acting as a guide for the one behind it.

Adjacent to the face of the frame A and arranged loosely upon the spindleD is a headplate F, which is prevented from turning with the spindle by a pin 72, one end of which is screwed into the frame A and the other enters a hole in the head-plate. The head-plate F fits against a shoulder 'L of the spindle D, and is thereby prevented from sliding inwardly upon said spindle, and is provided with a projecting hub F, which enters within the rim K of the Wheel K, and which hub is recessed, so as to inclose the cog-wheels L, as shown in Figs. 2 and ab A segment of the head-plate F is cut away to form a recess f The Wheel K is provided with peripheral ratchet-teeth Z and its rim K with internal cogs n.

An arm H is pivoted at its lower end to the inner surface of the hub F, so as to swing vertically in the segmental recess f of the head-plate l, which arm projects above the edge of the head-plate and is provided at its upper end with a pawl j, which engages the teeth Z of the rim K, and it is retained in vertical position by a spiral spring m, one end of which bears against said arm and the other against the head-plate F on the opposite side of the segmental recess in which the arm II moves.

The cog-wheels L are arranged upon each side of the spindle D, and are fixed to the ends of screws N, which project through theheadplate F and connect with threads in the frame A, so that as the cog-wheels are turned to the right the screws N will be screwed into the frame A, and the cog-wheels, bearing against the head-plate F, will force that against the shoulder i. of the spindle, and the spindle D and chuck E will be forced upon the axle B, so that the cutters f will act upon said axle.

The rim-wheel K turns upon the spindle D, and its inwardly-projecting rim K projects over the hub F of the head-plate F, so that the cogs n on the inner edge of the rim K mesh with the cog-wheels L and turn the same.

Upon the outer end of the spindleD is a pin-wheel M, which is fixed to the flattened part of the spindle next the crank 6, so as to turn with the spindle, and which is provided with radial slots 19, in which are adjusted inwardly-extending pins 7'. The pins 0' are provided with heads 0' and nuts .9, by which they may be adjusted in the slots 19, the heads hearing against the outer side of the pin-wheel M and the nuts against the inner side, so that by tightening the nuts the pins may be held in any desired position. The pins 0' project inwardly, so as to strike the upper ends of the arms II, and thereby cause the pawls j to turn the rimwheelK.

In Fig. 6 I have shown a modified form of chuck E, having shoulder-cutters f therein, and having its inner end provided with setscrews g, which project through the sides of the chuck and may be made to bear upon the axle I so that the chuck may be thereby adjusted upon the axle and the strain upon the feed mechanism lessened.

The machine being clamped to the axle A in the manner described, is operated as follows: The cutters f are properly arranged in the chuck E. The crank c is turned, thus turning the spindle D, the chuck E, and the pinwheel M,whieh is fixed to the spindle. As the pin-wheel M revolves the pins 1' will alternatcly strike the tops of the arms II, moving the upper end of each arm successively and causing the pawl j to engage the teeth Z of the rim -wheel K and turn the rim wheel. As the pin-wheel M turns a pin 0', after moving the arm II a short distance, will pass over the top of the arm and the spring m will throw it back in position to be again moved by an other pin. As the rim-wheel K turns the cogs n on the inner edge of the rim K will turn the cog-wheels L, which will turn the screws N in the frame A, and thus force the head-plate F, spindle D, and chuck E inwardly, so that the cutters f will cut a shoulder upon the axle B. It will be seen that the chuck IE will be fed or moved upon the axle at the same rate that the screwsN are turned into the frame A. If the feed is to be slow, the pins 7' are fixed in the outer portion of the slots 19 in the pin-wheel M, and if the speed is to be fast they are fixed in the inner portion of said slots. They will thus engage the arms II for alonger time, and consequently increase the speed of the feed mechanism. If a thread is to be recut upon the axle, the pawl j is turned back, so as not to actuate the feed mechanism, and the cutters f will follow the thread upon the axle when the chuck is turned, in the manner already described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A thread and shoulder cutter for axles, consisting, essentially, of a frame adapted to be clamped to the axle, a crank-actuated spindle mounted in said frame and provided with a chuck having cutters to engage the end of the axle, and suitable feed mechanism for feeding said chuck upon the axle, substantially as described.

2. A thread and shoulder cutter for axles, consisting, essentially, of a frame adapted to be clamped upon the axle, a crank-actuated spindle mounted in said frame and provided with a chuck and cutters to engage the end of the axle, and means, as screws N, cogwheels L, head-plate F, arms H, and pawlsj, rim-wheel K, having teeth l, and cogs n, pins 2", and pin-wheel M, for feeding said chuck upon the axle, substantially as described.

I11 a thread and shoulder cutter for axles, the combination, with a frame adapted to be clamped upon an axle and a spindle provided with a chuck, of the head-plate F, engaging a shoulder on the spindle, the rim-wheel K, having internal cogs n, the screws N, carried by the head-plate and engaging the frame, the gears L on screws N, and means for revolving the rimwheel K, substantially as shown and described.

4. The combination, with the frame A, spindle D, and chuck E, of the head-plate F, screws N, cog-wheels Ii, rim-wheel K, having teeth Z and cogs or, arms II, having pawls j, and pin-wheel M, having pins 9', substantially as described.

5. In a thread and shouldereutter for axles, the pin-wheel M, adapted to be attached to the spindle D and provided with slots 1), headed pins 0*, and means, as nuts S, for holding said pins in position, substantially as described.

CHARLES A. 'IIIOMPSON.

Witnesses:

'Lonrx RoBEn'rs, 0. U. Moni xrr. 

